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L. BEMELMANS & L. DE GIVE. MANUFACTURE OFGLASS.

No. 79,893. Patented July 14, 1868.

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Letters Patent No. 79,893, dated 'July 14, 1868,

IMPROVEMENT INQTHE UFAGTUBE 0F GLASS.

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TO ALL WHOM IT MAY CONCERN:

' Be it known that we, Leon Br'nrnnmns, and Lanannr' nn Grvn, residing in Atlanta, Georgia, have inventeda new and improved process of' manufacturing window and mirror-glasses, of whatever thickness, and a machine to carry it intb operation, called, Window and-Mirror-Glasses-Moulding Machine; and we do hereby declare that the following are full, clear, and exact descriptions of them, and of the construction of said machine, reference being had-to the accompanying drawings, making a part of this specification, and to the letters of reference marked thereon, which descriptions will enable others skilled in the art to make his use our inventions, and put them in perfect-operation.

Figure III is a front view of the machine.

Figure V is a side view.

Figure I is an inside viewofonehalf of the/machine.

Figure VI is a side view of the same half. I

Figure II is an inside view of thesecond half of the machine.

Figure IV, is a side view of the same half.

All the.drawings are constructed on a scale of one twenty-fourth of the natural size.

Ourproccss consists in pouring tho melted glass between two plates of metal, like cast iron or steel, polished parallel, and separated by an interval equal ,to the thickness one wants togi e to the sheet of gin-55.; then in pressing on said melted glass byone of the'sides. Under the double action of'i'ts natural weight, and of the aforesaid pressure, the melted glass spreads tidy in all the-space left between the p1ates, i1ntil-it reaches, on the four sides, an edge beyond which it cannot go. Then one-of the twoplates is removed, and on the other one is left a sheet of glass, all over equally thick, perfectly transparent, and polished, which is taken away to be heated again, like in the existing process;

Our machine is described as follows I 1. -One cast-iron or cast-steel plate, 13, Fig. II, rectangular, two inches thicl ten and a half feet 'long, six and a half feet wide, perfectly polished on one'face.

2. Another plate, A, FigfI, of same'metal, size, and form, also polished on one face. Around this plate, except at the moutli-hole,,on' the polished face, is fixed by screws a strip of iron,f, Fig. L'threc inches wide, and two-fifths of an ihch thick. Against this'strip lies the other plate B, and by'the thickness of it is deter mined the thickness of the glass. It acts as an edge, to prevent the escaping of the melted glass. This strip can be. replaced by another one, more or less thick, according to the thickness of the glass wanted. When the two plates are lying one on another, the polished faces of both are inside. They are fastened together by hooks, b b b b. Two little holes, a c, Fig. Lallow the air'to escape.

3, One mouth-hole G D, Fig. III, by which the meltedglass is to be poured in, of same metahland rectngular, four feetlong, two and two-fifth inches wide, one and a half, foot on one side, and two and a half feet c the otherside, high. Of this hole, one part, D,the highest, is fastened to the-plate B, and the other part,

(3 to the plateA. These parts are also'fastened together by hooks, d d d, and they are also polis hed.ihside.-

4. One pressing-piece, E, Fig. III, of some metal, rectangular at its base and sides, fonr feet long, two and tvo-fifth inches thick, six inches high, polished on the lateral and 'lowerfaeesf Ared,a, of four'hy two and twe fifth inches, is in communication with a motive-power. Said pressing-piece acts up and down in the monthho e, '11 which it fits perfectly. V

I heavidtln and length of ,the plates, and the interval between-said plates, can be increased of diminished according to the size of glasses that one wants to manufacture.

The machine operates in the following manner: Y

The plate B is laiddown on a rock masonry of forty-live degrees inclination; the plateA is fastened on it by th hooks; then, to resist the enormous pressnre hearing on itssurface fromv the inside, maintained par. elle t the other plate by three trnnsversal wooden beams. Thenielted glass is pdured in between the plates;

by'the mouth-hole U 1). 'When that space is filled, and also'partly the saidhiouth-holefthe pressing-piece E is introduced in said-hole. The melted glass, under the action of said pressing-piece, fits tidy an the polished faces ofth'e machine, cndis madoitself perfectly polished and "ucstriatcd, (without st iae.) All the air that may exist between the plates has escaped by the t wo little hole; 0,0, that are atopped by iron peg s as soon as melted glass show its'elf there. Then vthe creasing-piece and the wooden beams; are romoved, the machine is .placedhorizontally, the upper plate Aisliftedj. the lump of grass contained in th mouth-hole is cut off, and

the glass sheet taken away to be heated again, like in theother process; The advantages of our process and machine MB' I 1. Economy of labor. 2. Perfection of products. What we claim as our invetition, and deaire to secure by Lettcrs Patent, is- I A machine, caiied wihdow and miri-or-glasses-moulding machine, heretofore describd, or anyother sub; atantially the same, and which will'produce the intended efi'ect.

- L. BEMELMANS, LAUR. DE GIVEL Witnesses: I

MAT. Fran. FASSIG, J. H. LUCKHARDT. 

